 | | Report (issue) | | MINERAIS PROJECT REPORT Brazil Investigations (IR)BR-74 TUNGSTEN RESOURCES OF BRAZIL U. S. Geological Survey...standards or nomenclature 1974 TUNGSTEN RESOURCES OF BRAZIL By Max G. White CONTENTS Pages ABSTRACT .......tungsten in Brazil ........ 7 SCHEELITE DEPOSITS ...................... 7 Northeast Brazil. ..........Geologic setting of scheelite deposits ....... 7 Brejui Mine. .................... 10 Production, reserves...reserves, and resources potential .... 12 Rio Grande do Sul .................... 16 Location ........ |  | | Journal (article/letter/editorial) | | Geologia de Pernambuco, Universidade do Reeife, Recife, Brazil A. BHASKARARAO MARIA S. ADUSUMILLI References...received 25 January 1965] Bismuth minerals from Borborema region, Brazil THE Borborema metallogenetic...province in north-eastern Brazil, extending over parts of Paraiba and Rio Grande do Norte states, is well known...up studies made on the bismuth minerals found there. Mineralization of bismuth is observed both in the...Algonkian period. The minerals include native bismuth, bismuthinite, bismutite, bismutotantalite, bismoclite |  | | Journal (article/letter/editorial) | | north-east Brazil SEVERAL phosphate minerals are known in the pegmatites of northeastern Brazil, and more...Boqueir~o pegmatite mine, situated near Parelhas town of the Rio Grande do Norte state. A new study of...of the minerals from this mine has added two more rare species to the list given by Murdoch (1958). Leucophosphite...Geologia de Pernambuco, Universidade do Reeife, Recife, Brazil A. BHASKARARAO MARIA S. ADUSUMILLI References...received 25 January 1965] Bismuth minerals from Borborema region, Brazil THE Borborema metallogenetic |  | | Journal (article/letter/editorial) | | e d i n t h i s i n d e x . Acari, Rio Grande do Notre, Brazil, Bismutotantalite, 785. Adularia,Zambia... Alto Feio, Pedra Lavrada, Paraiba, Brazil, bismoclite, bismuth, bismutite, 785. Alunite, lsrael, derived...li. Arrojadite, Brazil, d.t.a., 427. Arsenic, geochemistry of, 88. Arsenobismite, Brazil, 785. Artern,...Bancroft, Ontario, peristerite, 165. Barbosalite, Brazil, 784. Barium feldspars, see Barinm-orthoclase,...Bearpaw Mtns., Montana, pseudoleucite, 596. Benallt mine, Rhiw, Caernarvonshire, celsian, 508. Berek compensator |  | | Journal (article/letter/editorial) | | wo]framite, 995. Pengenna mine, St. Kew: meneghinite, 424. South Terras mine, St. Stephen-in Brannel:...argentojarosite, li. WALES Benallt mine, Rhiw, Caernarvonshire: celsian, 508. Clogau mine, Dolgelly, ~ier.ionethshire:...ionethshire: tellurbismuth, 424. Vigra mine, Dolgelly, Merionethshire: tellurbismuth, 424. SCOTLAND Morar...e c h o s l o v a k i a (~eskoslovensko) Plavno mine, Krus'~ tlory, Bohemia: stannian andradite, 379...varlamoffite, 622. Japan Kaso mine, Tochiga : kasolte, 508. Nodo Tamagawo mine, Iwate prefecture: barium-orthoclase |  | | Journal (issue) | | rubis sur gangue, etc ... De 100 g à 10 kg pièce. Grande variété de pierres taillées, précieuses et semi-précieuses...Ti:lt·plm11<' iJt,.95.·16 • DIRECTEUR 28 LES VIÉ. Nive mine 33 ITINÉRAIRES MINÉRALOGIQUES AU BRÉSIL. par J...J. et J. CASSEDANNE. Les environs de Currais Novos, différents gisements facilement accessibles et riches...récente, ce japse devient déjà rare. Il présente une grande variété de couleurs : vert, rouge, ocre, brun et...est naturellement fonction de la plus ou moins grande rareté de la pierre brute, mais avant tout de la |  | | Book | | BARTORELLI ::• . . .. MINERALS & PRECIOUS STONES OF BRAZIL Sponsored by: VALE MINISTER.IO DA CULTURA ©...Crystal of multicolored tourmaline (84 x 26 mm), Lavra do Sapo, Ferruginha, Conselheiro Pena, Minas Gerais...(Camara Brasileira do Livro, SP, Brazil) Cornejo, Carlos .Minerals & precious stones of Brazil. Carlos Cornejo...pedras preciosas do Brasil Bibliography 1. Gemology 2. Geology 3. Minerals - Brazil 4. Minerals- Classification... Mineralogy 6. Mineralogy - Brazil - History 7. Precious stones - Brazil I. Bartorelli, Andrea. II. Title |  | Amstutz, G. C., Goresy, A. El, Frenzel, G., Kluth, C., Moh, G., Wauschkuhn, A., Zimmermann, R.A. - Eds. (1982) Ore Genesis. Springer Berlin, Heidelberg. doi:10.1007/978-3-642-68344-2 | Book | | block I experienced recently when visiting a gold mine in virtually unmetamorphosed ground. A fault cuts..."common sense" observations described from the gold mine with the chert and the organic matter. Another potent...Alterations of Conglomeratic Uranium Ores, Pronto Mine, Ontario, Canada E.Wm. Heinrich (With 1 Figure)...Observations on Ore Rhythmites of the Trzebionka Mine, Upper Silesian-Cracow Region, Poland L. Fontbote...the Cobaltite-Gersdorffite Series from the Raipas Mine, Finnmark, Norway F.M. Vokes and G.S. Strand (With |  | | Journal (article/letter/editorial) | | relaeiones entre 6stas franjas son similares entre Norte y Sud Am6rica. Esto indica que dependen de la distribuei6n...and SCHNE1DER-SCHERBINA (1964); AHLEELD(1967). Brazil: JomM (1941). Chile: t~taz and ERmKSEN (1962);...FERNANDEZ LIMA for Argentina, G. TOLBEi=tT ~or Brazil, D. H. MGLAuGHLIN, JR. ~or Colombia, E. M~3LLER-KAHLE...he made occasional trips to Argentina, Bolivia, Brazil, Chile and Uruguay, thus being able to lay the...For most of this presentation these generalizations do not obscure critical detail, but where this happens |  | Hodges, C.A., Cox, D.P., Singer, D.A., Case, J.E., Berger, B.R., Albers, J.P. (1984) U.S. Geological Survey-INGEOMINAS mineral resource assessment of Colombia. Open-File Report Vol. 1984 (84-345) US Geological Survey doi:10.3133/ofr84345 | Report (issue) | | deposits of such minerals in adjacent areas of Brazil and Venezuela suggest that eastern Colombia may...deposits, based on analogy with adjacent areas in Brazil and Venezuela. An initial reconnaissance should...base-metal sulfides with gold, silver, tungsten, and bismuth may be associated with low-fluorine types. Peripheral...stream-sediment analyses for molybdenum, tungsten, fluorine, bismuth, and the base and precious metals. Molybdenum values...of panned concentrates analyzed for tungsten, bismuth, tin, and the base and precious metals are useful |  | | Report (volume) | | examples of commodity geology research. These examples do not comprehensively cover the range of geologic research...applications to mineral commodity problems, but they do offer a sampling or flavor of the diversity of important...inequities cannot be resolved "without major efforts to do so." (McLaren and Skinner, 1987, p. 1). In addition...and laminae can be explained by other models that do not involve introduction of barium in hydrothermal...barite precipitates at lower levels of oxidation than do manganese oxides; thus, barite is more likely to |  | | Report (volume) | | based on considerations that extend far beyond the mine itself, in some instances relating to the overall...another. This goal is difficult to attain, because we do not always know which features are site specific...subject, as in a scale model of the workings of a mine, to a unifying concept that explains or describes...Valley type is the presence of secondary dolomite. But do we know that this is essential? Suppose a deposit...figures; nevertheless, the grade-tonnage figures given do represent material that the company or the government |  | | Book | | incompletely characterized hydromicas-these nebulous species do not form visible crystals and in themselves are never...Springfield show ( 1995: 582). Madawaska [Faraday] mine near Bow Lake, Hastings County. Some of the world's...property of, the old Madawaska uranium mine (called the Faraday mine before 1964). The mineral assemblage...Trimble and Cowgill, 1977). LATINAMERICA BRAZIL Jacupiranga mine, Sao Paulo. Among the crystallized minerals...Oblast. Alpine-type clefts in the famous Dodo quartz mine commonly contain ilmenite, occurring as lustrous |  | | Report (issue) | | highest-lying diamond pipe. Commissioning Letseng mine at 10 500 feet during the last two years has called...se IRON (LIBERIA) LEAD (AUSTRALIA) > IRON (BRAZIL) —- LIMESTONE (CURACAO) ASBESTOS (AUSTRALIA)...Whatever you're mining, wherever you're mining, mine it on Bridgestones Bridgestones — for all the variables...Operating conditions differ enormously from mine to mine. Not only are there variations in the kind of...off-the-road tires. No matter what the conditions are, we do our utmost to build the tire to meet them. Utilizing |  | | Book | | interrelationships, it is no surprise that these metallic elements do occur as ore concentrations in the mantle and its...3. Pyrrhotite, chalcopyrite, stannite, native bismuth. 4. Manganese-iron-magnesium carbonate, sphalerite...galena, lead sulfosalts, silver sulfosalts, native bismuth and bismuthinite, tellurides, stibnite, cinnabar...solvent and the solute are of nearly the same size, do not form intermediate compounds and have the same...abundant in arsenopyriterich samples from Wongabah Mine, characteristically forming aggregates of fibrous |  | | Report (issue) | | Afghanistan _______________________________ _ 215 Brazil ____________________________________ _ 215 Chile...06 ppm), and chlorine ( 0.04 percent). Gold Acres mine, Nevada.-T. J. Armbrustmacher found anomalously...several metals in rocks from the Gold Acres open-pit mine, Lander County, north-central Nevada. Titanium,...hydrothennal processes. Copper, lead, silver, bismuth, and cadmium have also been introduced but only...inclusions, and local variations of elements within the mine, suggest the imprint of at least two sequences of |  | | Report (issue) | | Summary by countries. ________________-_-_----Brazil--.-.---.. -__---._------------------CENTO _ -_...subordinately by silver, lead, zinc, antimony, bismuth, and tin. The main deposit of the northern part...diagnostic elements include copper, antimony, tin and bismuth. ARIZONA Gold placer and lode deposits, Gold Basin...of 8 to 10 sq mi in the vicinity of the King Tut mine. The gold content of these arroyo gravels is highly...The COLORADO prospect and the Karla Kay uranium mine, 2 miles west-northwest, appear to lie on the same |
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